Topological queries in spatial databases
PODS '96 Proceedings of the fifteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Fixpoint logics, relational machines, and computational complexity
Journal of the ACM (JACM)
A study of homogeneity in relational databases
Annals of Mathematics and Artificial Intelligence
Reflective Relational Machines Working on Homogeneous Databases
FoIKS '00 Proceedings of the First International Symposium on Foundations of Information and Knowledge Systems
Relational Databases and Homogeneity in Logics with Counting
FoIKS '02 Proceedings of the Second International Symposium on Foundations of Information and Knowledge Systems
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ADC '04 Proceedings of the 15th Australasian database conference - Volume 27
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Acta Cybernetica
The Relational Polynomial-Time Hierarchy and Second-Order Logic
Semantics in Data and Knowledge Bases
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